Home / 15,135.39-22,703.05-7,213.90

Finding the Fourth Proportional to 15,135.39, 22,703.05 and 7,213.90

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Solution

The fourth proportional to 15,135.39, 22,703.05 and 7,213.90 is: 10,820.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.39 : 22,703.05 = 7,213.90 : x
  2. Step 2: Convert to fraction form
    15,135.39/22,703.05 = 7,213.90/x
  3. Step 3: Cross multiply
    15,135.39x = 22,703.05 × 7,213.90
  4. Step 4: Simplify right side
    15,135.39x = 163,777,382.81
  5. Step 5: Solve for x
    x = 163,777,382.81/15,135.39
  6. Step 6: Final answer
    x = 10,820.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.